Title:
IMPROVED HYBRID BATTERY POWER SOURCE FOR IMPLANTABLE MEDICAL DEVICE
Document Type and Number:
WIPO Patent Application WO2004068615
Kind Code:
A3
Abstract:
A hybrid battery power source (20) for implantable medical use provides a generally constant low internal resistance during discharge and avoids voltage delays of the type that develop as a result of run down-induced resistance increase in Li/SVO cells. The hybrid battery power source (20) utilizes two batteries or cells (A, B), one being primary cell (A) of relatively high energy density and the other being a secondary cell (B) of relatively low internal resistance that is rechargeable. The primary and secondary cells (A, B) are connected in a parallel arrangement via a voltage boost/charge control circuit (22) that is powered by the primary cell (A) and adapted to charge the secondary cell (B) while limiting charge/discharge excursions thereof in a manner that optimizes its output for high energy medical device use. The energy storage capacitors (C2, C3) of a medical device (112) in which the hybrid battery power source may be situated are driven by the secondary cell (B). The primary cell (A) is used to as an energy source for recharging the secondary cell (B).< >
Inventors:
GREATBATCH WILSON (US)
DEAL JEFFREY (US)
DEAL JEFFREY (US)
Application Number:
PCT/US2004/002218
Publication Date:
October 14, 2004
Filing Date:
January 24, 2004
Export Citation:
Assignee:
GREATBATCH ENTPR CORP (US)
GREATBATCH W (US)
DEAL JEFFREY (US)
GREATBATCH W (US)
DEAL JEFFREY (US)
International Classes:
A61N1/08; A61N1/378; H01M10/0525; H01M16/00; H02J7/00; H01M6/16; H01M6/50; H01M10/052; (IPC1-7): A61N1/00
Foreign References:
| US5876424A | 1999-03-02 |
Other References:
See also references of EP 1592474A4
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